18920506

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{12113}}^1$

素因数の和:12197

約数の個数: 16

約数和(自身を含む): 31399488

約数和(自身を除く): 12478982

約数列:

[1, 2, 11, 22, 71, 142, 781, 1562, 12113, 24226, 133243, 266486, 860023, 1720046, 9460253, 18920506]

約数ペア:

[(1, 18920506), (2, 9460253), (11, 1720046), (22, 860023), (71, 266486), (142, 133243), (781, 24226), (1562, 12113)]